Article
Materials Science, Multidisciplinary
Sang Won Lee, Gukin Han, Tea-Sung Jun, Sung Hyuk Park
Summary: This study demonstrates that the initial texture of Mg alloy significantly affects the microstructure developed during cold rolling and the recrystallization behavior during subsequent annealing. The distribution of internal strain energy determines the formation structure of recrystallized grains, with ND samples mainly forming a bimodal grain structure along shear bands, while TD samples form a uniform equiaxed recrystallized grain structure.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Qing Miao, Lantao Zhu, Wenke Wang, Zhihao Wang, Bin Shao, Wenzhen Chen, Yang Yu, Wencong Zhang
Summary: By multi-pass lowered-temperature rolling, AZ31 magnesium alloy sheets with optimized microstructure morphology were successfully fabricated, showing refined grain size and improved microstructure homogeneity. The stress state and temperature during the rolling process had influences on the texture evolution, leading to enhanced yield strength and fracture elongation of the resulting sheets.
Article
Metallurgy & Metallurgical Engineering
S. M. Fatemi, S. Kheyrabadi, H. Paul
Summary: The deformation behavior and microstructural evolutions of a rolled AZ31 magnesium alloy with and without pre-existing extension twins were studied. The initial texture was found to not only influence the evolution of flow stress, but also change the size and fraction of recrystallized grains. Pre-existing twins were found to reduce the anisotropy of the material.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
L. Y. Zhao, H. Yan, R. S. Chen, En-Hou Han
Summary: The grain growth process in magnesium alloys, specifically in the Mg-Zn-Gd alloy, shows gradual growth with increasing annealing time, closely associated with texture changes.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Ruinan Chen, Qinghua Chen, Peng Peng, Bin Tan, Xu Huang, Qingsong He, Jian Su, Chao Xu, Huahong Deng, Qingwei Dai
Summary: The abnormal grain growth behavior and preferential orientation of AZ31 Mg alloy were systematically examined. Abnormal grain growth was observed after annealing at 500 degrees C for 9 h, and the grain growth rate was 1.3 mm h(-1). Due to the abnormal grain growth, the activation energy of grain growth was reduced from 172 to 104 KJ mol(-1). The abnormal grains with < 11(sic)0 > orientation grew preferentially, resulting in an increase in < 11(sic)0 > type texture intensity and a decrease in < 0001 > type texture intensity. The energy difference of the misorientation is the main driving force for the formation of abnormal grains with < 11(sic)0 > orientation.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Wei Wu, Lifei Wang, Guangsheng Huang, Hua Zhang, Weili Cheng, Hongxiang Wang, Kwang Seon Shin
Summary: In order to enhance the strength and plasticity of magnesium alloys, the Screw Twisted Extrusion (STE) process is proposed, which can refine the grain and weaken the basal texture. By utilizing continuous dynamic recrystallization (CDRX) and twin-induced dynamic recrystallization (DRX) behaviors, the grains are refined and the grain orientation is rotated, resulting in the generation of a transverse direction (TD) tilted texture. Through 16 passes of STE, the grain size is reduced from approximately 14.36 μm to about 4.03 μm. As a result of grain refinement and texture weakening, the tensile yield strength (TYS) and ultimate tensile strength (UTS) are improved to 166 MPa and 340 MPa, respectively, compared to the as-received (AS) samples. Particularly, the fracture elongation (EL) of the STE-16 P samples increases from 8.3% to 14.5%.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Metallurgy & Metallurgical Engineering
M. G. Jiang, C. Xu, H. Yan, T. Nakata, Z. W. Chen, C. S. Lao, R. S. Chen, S. Kamado, E. H. Han
Summary: This study investigated the static recrystallization and texture evolution in an extruded Mg-Zn-Gd alloy, providing direct evidence of rare earth (RE) texture evolution during grain growth. The research findings contribute to understanding the mechanisms involved in forming RE texture during extrusion and developing wrought Mg alloys with improved formability.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Fatim-Zahra Mouhib, Fengyang Sheng, Ramandeep Mandia, Risheng Pei, Sandra Korte-Kerzel, Talal Al-Samman
Summary: Binary and ternary Mg-1%Er/Mg-1%Er-1%Zn alloys were studied for texture selection during recrystallization and grain growth. The ternary alloy showed a unique TD recrystallization texture and selective growth behavior attributed to solute drag effect. Mg-1%Er-1%Zn alloy demonstrated remarkable enhancement in mechanical properties due to synergic alloying effects.
Article
Metallurgy & Metallurgical Engineering
Ye Wang, Feng Li, Yu Wang, Xing Mao Xiao
Summary: The interactive alternating forward extrusion (AFE) method can change the texture type and weaken the texture strength. The texture evolution of interactive AFE was studied using AZ31 magnesium alloy as an example. The results show that various dynamic recrystallization behaviors can weaken the texture to different degrees, with twinning-induced recrystallization having a particularly significant effect. The formation of a stable fiber texture was observed during the AFE process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Industrial
Dijia Zhao, Jian Qin, Shulin Lue, Jianyu Li, Wei Guo, Shusen Wu, Yaohua Zhang
Summary: Ultrafine-grained AZ31 alloy was successfully fabricated using a novel continuous squeeze casting-extrusion process. The extrusion ratio had a significant effect on the grain size and mechanical properties.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Dijia Zhao, Shulin Lu, Jianyu Li, Wei Guo, Shusen Wu
Summary: By utilizing the novel continuous squeeze casting-extrusion (CSCE) process, the average grain size of AZ31 alloy was reduced to 2.43 μm, resulting in an excellent combination of ultimate tensile strength of 321 MPa and elongation of 14.7%.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Risheng Pei, Yongchun Zou, Muhammad Zubair, Daqing Wei, Talal Al-Samman
Summary: This study investigates the synergistic effect of various alloying elements on the texture and microstructure evolution in magnesium alloys. The results demonstrate that adjusting the precipitation and solute segregation can lead to desired texture modifications.
Article
Materials Science, Multidisciplinary
Xiang Jiang, Chun Xi, Xiaohu Liu, Limin Wang, Yuehua Kang, Qinghuan Huo
Summary: The study reveals that in magnesium alloys, higher Gd content can enhance the thermal stability of fine grains initially through continuous SRX mechanism, and later through consuming dislocations to promote grain nucleation, resulting in difficulty in grain boundary migration in high Gd-alloyed magnesium. However, peak-aging in high Gd-alloyed magnesium leads to accelerated grain growth rate, exceeding that of low Gd-alloyed magnesium.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Partha Duley, Souriddha Sanyal, T. K. Bandyopadhyay, Sumantra Mandal
Summary: In this study, annealing treatments were conducted on magnesium alloys forged at different temperatures. The specimens forged at 573 K and subsequently annealed at 623 K for 5 min exhibited a better combination of tensile properties compared to the other specimens, attributed to the unique grain size heterogeneity and the presence of finer and coarser second phase particles.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
M. Mohseni, A. R. Eivani, H. Vafaeenezhad, H. R. Jafarian, M. T. Salehi, J. Zhou
Summary: The study demonstrated that increasing annealing temperature and holding time in magnesium alloys can decrease the fraction of second-phase particles, thereby limiting grain growth and affecting grain size and homogeneity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Jing Wang, Lu Luo, Qinghuan Huo, Yafeng Shi, Zhenyu Xiao, Youxiong Ye, Xuyue Yang
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
Zhenyu Xiao, Qinghuan Huo, Zhirou Zhang, Weiying Huang, Lu Luo, Yuxiu Zhang, Aki Hashimoto, Xuyue Yang
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Zhenyu Xiao, Aki Hashimoto, Xuyue Yang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Nanoscience & Nanotechnology
Yuxiu Zhang, Zhenyu Xiao, Qinghuan Huo, Zhirou Zhang, Jiao Tang, Aki Hashimoto, Xuyue Yang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Nanoscience & Nanotechnology
Kaiyu Li, Qinghuan Huo, Yuxiu Zhang, Chaozhu Zhang, Weiying Huang, Youxiong Ye, Aki Hashimoto, Xuyue Yang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Nanoscience & Nanotechnology
Yi Yang, Qinghuan Huo, Yuxiu Zhang, Lu Luo, Zhenyu Xiao, Jun Wang, Aki Hashimoto, Xuyue Yang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Yakun Zhu, Jonathan D. Poplawsky, Sirui Li, Raymond R. Unocic, Leslie G. Bland, Christopher D. Taylor, Jenifer S. Locke, Emmanuelle A. Marquis, Gerald S. Frankel
Article
Chemistry, Physical
Zhenyu Xiao, Qinghuan Huo, Yuxiu Zhang, Zhirou Zhang, Zehao Li, Aki Hashimoto, Xuyue Yang
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Nanoscience & Nanotechnology
Chunyu Wang, Yuxiu Zhang, Qinghuan Huo, Zhirou Zhang, Jiao Tang, Aki Hashimoto, Xuyue Yang
Summary: This study investigated the effects of twinning time node on the creep resistance of an extruded Mg-2wt%Y sheet. Pre-compression with a low strain before creep resulted in a large amount of {10 (1) over bar2} twins, impacting the creep resistance of the samples. The dominant creep mechanisms differed between samples with and without pre-compression, with the presence of twins affecting the creep rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yuxiu Zhang, Qinghuan Huo, Zhirou Zhang, Zhenyu Xiao, Aki Hashimoto, Xuyue Yang
Summary: In this study, the tensile creep anisotropy of a hot-rolled Mg-5.5 wt%Y alloy sheet was investigated. It was found that a poor creep resistance was obtained along the normal direction due to stress concentration induced by twin boundaries, while a good creep resistance was achieved along the rolling and transverse directions. Additionally, the addition of 5.5 wt%Y was shown to enhance crack resistance of grain boundaries over that of twin boundaries in Mg-Y based alloys.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Jiao Tang, Qinghuan Huo, Zhirou Zhang, Yuxiu Zhang, Shilin Zhao, Aki Hashimoto, Xuyue Yang
Summary: This study investigated how to enhance the creep resistance of dilute Mg-Nd alloys through pre-compression and subsequent peak-aging. By studying samples with different treatments, it was found that the PC-AA sample exhibited the best creep resistance, followed by the NPC sample, and the PC sample showed the poorest performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Zhenyu Xiao, Yuxiu Zhang, Aki Hashimoto, Xuyue Yang
Summary: The study proposed a practical method for optimizing the mechanical properties of Mg-4Y-2Nd-0.2Zn-0.5Zr alloy by combining interrupted compression with intermediate annealing, resulting in the formation of deformation bands triggered by the intermediate annealing and a higher volume fraction of ultra-fine grains in the final IC sample compared to the CC sample.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Chunxiang Chen, Qinghuan Huo, Zhirou Zhang, Yuxiu Zhang, Jiao Tang, Kaiyu Li, Jijun Ma, Xuyue Yang
Summary: In heat-resistant Mg-Gd based alloys, the presence of static precipitated beta ' phases and directly formed PFZs were found to enhance the creep resistance of the alloy. The dominant creep mechanisms, including twinning and cross-slip, were also identified as key factors contributing to the improved creep resistance of the alloy. The study highlights the importance of precipitate origin and PFZ development in understanding and improving the creep properties of Mg-Gd based alloys at medium to high temperatures.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Yuxiu Zhang, Zhenyu Xiao, Aki Hashimoto, Xuyue Yang
Summary: The study investigated the effects of artificial aging on the tensile creep resistance of a hot-rolled Mg-3.5 wt%Nd alloy. It found that the type of precipitates and solute depletion in grain boundaries changed with aging duration, leading to grain boundary migration and PFZ widening, which decreased creep resistance. The sample with narrow PFZs and dislocations cutting beta' phases showed the best creep resistance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yuxiu Zhang, Qinghuan Huo, Zhirou Zhang, Zhenyu Xiao, Chunyu Wang, Aki Hashimoto, Xuyue Yang
Summary: In this study, the compressive creep behaviors of different Mg alloys at 523K were systematically investigated, showing a dependence on loading direction and an increase in creep resistance with higher Y content. The addition of Y also helped to reduce creep anisotropy and improve creep resistance, with dynamic precipitation strengthening further enhancing creep resistance in certain alloys.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
